Claude Code skills and plugins

What the ecosystem is actually using: skill collections, plugin marketplaces and agent packs, ranked by stars and refreshed every morning. Last activity is shown next to each one, because a popular repository that stopped moving is a different proposition to a popular one that did not.

60 repositoriesUpdated
  1. 1

    An agentic skills framework & software development methodology that works.

    SkillsShellMITthis week
  2. 2
    affaan-m/ECC★ 254k

    The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

    AgentsJavaScriptMITthis week
  3. 3

    The agent that grows with you

    AgentsPythonMITthis week
  4. 4

    A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.

    Skills5mo ago
  5. 5

    Public repository for Agent Skills

    SkillsPythonthis week
  6. 6

    Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

    SkillsJavaScriptMITthis week
  7. 7

    A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode, OpenClaw, Grok Build & Hermes Agent. Only official website: ccswitch.io

    SkillsRustMITthis week
  8. 8

    An AI skill that provides design intelligence for building professional UI/UX across multiple platforms.

    SkillsPythonMITthis week
  9. 9

    Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

    SkillsPythonApache-2.0this week
  10. 10

    🪨 why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman

    SkillsGothis week
  11. 11

    🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes, landing pages, dashboards, slides, images & video — real files, HTML/PDF/PPTX/MP4 export. 🤖 Claude Code / Codex / Cursor / DeepSeek Harness / OpenCode & 20+ CLIs via BYOK.

    SkillsTypeScriptApache-2.0this week
  12. 12

    Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects relevant context back into future sessions. Works with Claude Code, OpenClaw, Codex, Gemini, Hermes, Copilot, OpenCode + More

    SkillsJavaScriptApache-2.0this week
  13. 13

    Production-grade engineering skills for AI coding agents.

    SkillsJavaScriptMITthis week
  14. 14

    Taste-Skill - gives your AI good taste. stops the AI from generating boring, generic slop

    SkillsJavaScriptMIT16d ago
  15. 15

    Graphs that teach > graphs that impress. Turn any code into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude Code, Codex, Cursor, Copilot, Gemini CLI, and more.

    SkillsTypeScriptMITthis week
  16. 16
    rtk-ai/rtk★ 80k

    CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

    AgentsRustApache-2.0this week
  17. 17

    Give your AI agent eyes to see the entire internet. Read & search Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu — one CLI, zero API fees.

    AgentsPythonMIT8d ago
  18. 18

    Bash is all you need - A nano claude code–like 「agent harness」, built from 0 to 1

    AgentsPythonMIT14d ago
  19. 19

    A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows

    CollectionsPython30d ago
  20. 20

    🌊 The original agent meta-harness. Deploy intelligent multi-player swarms, coordinate autonomous workflows, and build conversational AI systems. Features adaptive memory, self-learning intelligence, RAG integration, and native Claude Code / Codex / Hermes and many more Integrated

    SkillsTypeScriptMITthis week
  21. 21

    Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

    AgentsPythonApache-2.0this week
  22. 22

    Open-source AI job search: scan job portals, evaluate listings into a structured A-H report with a global 1-5 score, tailor your CV, track applications — runs locally in your AI coding CLI (Claude Code, Codex, OpenCode, Antigravity…)

    AgentsJavaScriptMITthis week
  23. 23

    OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.

    SkillsTypeScriptthis week
  24. 24

    from vibe coding to agentic engineering - practice makes claude perfect

    SkillsHTMLMITthis week
  25. 25

    Extracted system prompts from Anthropic - Claude Fable 5.1, Opus 5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.

    AgentsJavaScriptCC0-1.0this week
  26. 26

    Orca is the ADE for working with a fleet of parallel agents. Run any coding agent with your own subscription. Available on desktop, mobile and remote runtime.

    AgentsTypeScriptMITthis week
  27. 27

    Never stop coding. Free MIT AI gateway: one endpoint, 352 providers (150+ free), 1200+ models Kimi, Claude, GPT, Gemini, GLM, DeepSeek, MiniMax. Works with Claude Code, Codex, Cursor, OpenCode, Cline & Copilot. Quota-aware auto-fallback, RTK+Caveman compression saves 15-95% tokens, MCP/A2A, Desktop/PWA. Built by 550+ contributors

    AgentsTypeScriptMITthis week
  28. 28

    AI agent skill that researches any topic across Reddit, X, YouTube, HN, Polymarket, and the web - then synthesizes a grounded summary

    SkillsPythonMITthis week
  29. 29

    Agent skill for beautiful, verifiable architecture, workflow, sequence, data-flow, and lifecycle diagrams—self-contained HTML with motion and crisp export.

    SkillsJavaScriptMITthis week
  30. 30

    A hand-picked collection of the finest of resources for the most awesome of agents, Claude Code, the undisputed champion of coding companions, from the unstoppable team at Anthropic PBC. A delectable showcase of top tier skills, ambidextrous agents, scintillating status lines, top notch developer tooling, and also we have plugins

    CollectionsPythonthis week
  31. 31

    The awesome collection of OpenClaw skills. 5,400+ skills filtered and categorized from the official OpenClaw Skills Registry.🦞

    CollectionsMITthis week
  32. 32

    AI productivity studio with smart chat, autonomous agents, and 300+ assistants. Unified access to frontier LLMs

    SkillsTypeScriptAGPL-3.0this week
  33. 33

    Wrap Antigravity, ChatGPT Codex, Claude Code, Grok Build as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 3.1 Pro, GPT 5.6 Series, Grok 4.5, Claude model through API

    ToolingGoMITthis week
  34. 34

    Marketing skills for Claude Code and AI agents. CRO, copywriting, SEO, analytics, and growth engineering.

    SkillsJavaScriptMITthis week
  35. 35

    【低代码v2.0,一句话即可生成整个系统】企业级AI低代码平台,一键生成前后端代码甚至整个系统。 AI Skills 一句话画流程、设计表单、生成报表、大屏。内置 AI应用平台涵盖:AI聊天、知识库、流程编排、MCP插件等,兼容主流大模型。引领AI低代码「Skills 生成 → 在线配置 → 代码生成 → 手工合并->AI修改」开发模式,解决 Java 项目 90% 重复工作,提高效率又不失灵活。

    SkillsJavaApache-2.0this week
  36. 36

    Academic Research Skills for Claude Code: research → write → review → revise → finalize

    SkillsPythonthis week
  37. 37

    Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-agent, multi-model, multi-channel. Lightweight, extensible, one-line install. (formerly chatgpt-on-wechat)

    SkillsPythonMITthis week
  38. 38

    AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,115+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.

    CollectionsPythonMITthis week
  39. 39

    Agent skill that removes signs of AI-generated writing from text

    SkillsPythonMITthis week
  40. 40

    Turn any AI agent into an AI Scientist. The #1 Agent Skills library for science, used by 190,000+ scientists worldwide. 165 ready-to-use validated skills plus 100+ scientific databases covering biology, chemistry, medicine, and drug discovery. Compatible with Cursor, Claude Code, Codex, Pi, Antigravity, and the open Agent Skills standard.

    SkillsPythonMITthis week
  41. 41

    High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.

    ToolingCMITthis week
  42. 42

    A one-of-a-kind resume builder that keeps your privacy in mind. Completely secure, customizable, portable, open-source and free forever. Try it out today!

    SkillsTypeScriptMITthis week
  43. 43

    Powerful AI Client

    ToolingTypeScriptGPL-3.0this week
  44. 44

    The job search that runs on your machine. AI job application framework built on Claude Code: evaluate postings, tailor CVs, write cover letters, prep interviews. Fork it and own it.

    AgentsPythonMITthis week
  45. 45

    A visual, example-driven guide to Claude Code — from basic concepts to advanced agents, with copy-paste templates that bring immediate value.

    ToolingPythonMITthis week
  46. 46

    Sub2API 一站式开源中转服务,让 Claude、Openai 、Gemini、Grok订阅统一接入,支持拼车共享,更高效分摊成本,原生工具无缝使用。

    ToolingGoLGPL-3.0this week
  47. 47

    Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, and Google Antigravity

    Plugin marketplacesPythonMITthis week
  48. 48

    Teams-first Multi-agent orchestration for Claude Code

    AgentsTypeScriptMITthis week
  49. 49

    Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.

    CollectionsJavaScriptMITthis week
  50. 50

    the runtime your coding agents live on

    AgentsRustApache-2.0this week
  51. 51

    Reverse Engineering / Authorized Penetration Testing / Security Research Skill Router Pack AI-powered routing + On-demand toolchain bootstrapping + Self-evolving knowledge base Supports Claude Code, Kiro, Cursor, Cline, and other AI coding clients 逆向/渗透/安全技能路由包 - AI 自动路由 + 按需自举工具链 + 自动进化经验库 | 支持 Claude Code / Kiro / Cursor / Cline 等代码 AI 客户端

    SkillsPowerShellMITthis week
  52. 52

    38 editorial diagram types for Claude Code, Codex, and Pi. Self-contained HTML + SVG. No shadows. No Mermaid slop.

    SkillsHTMLMITthis week
  53. 53

    A curated collection of 1000+ agent skills from official dev teams and the community, compatible with Claude Code, Codex, Gemini CLI, Cursor, and more.

    CollectionsMITthis week
  54. 54

    817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 29 security domains · Apache 2.0

    SkillsPythonApache-2.09d ago
  55. 55

    Google Workspace CLI — one command-line tool for Drive, Gmail, Calendar, Sheets, Docs, Chat, Admin, and more. Dynamically built from Google Discovery Service. Includes AI agent skills.

    SkillsRustApache-2.0this week
  56. 56

    A lightweight alternative to OpenClaw that runs in containers for security. Connects to WhatsApp, Telegram, Slack, Discord, Gmail and other messaging apps,, has memory, scheduled jobs, and runs directly on Anthropic's Agents SDK

    SkillsTypeScriptMITthis week
  57. 57

    Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

    SkillsPythonApache-2.0this week
  58. 58

    A skill to stop your coding agent from burying the answer. ADHD-friendly output.

    SkillsPythonMITthis week
  59. 59

    Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.

    SkillsPythonMITthis week
  60. 60

    Anti-AI-slop design skill for Claude Code, Cursor, and Codex.

    ToolingCSSMIT1mo ago

What counts as a skill

A skill is a folder with a SKILL.md in it: instructions Claude Code loads when the task matches, so the model follows your process instead of improvising one. A plugin bundles skills with commands, agents and hooks, and a marketplace is a repository of plugins you can add by URL.

Most entries here are one of three things — a single well-made skill, a collection someone maintains, or a marketplace pointing at other people's collections.

How this list is built

GitHub is searched each morning across the topics this ecosystem tags itself with, plus a handful of repositories included by name. That second part matters: search only finds what the topics say, and the largest project here tags itself skills rather thanclaude-code, so a purely topic-driven list misses it entirely.

Forks, archived repositories, anything under 300 stars and anything untouched for nine months are left out. Ranking is by stars, which measures attention rather than quality — read the last-activity marker alongside it.

Before installing anything: a skill is instructions your agent will follow and a plugin can carry hooks that run commands. Both are code you are choosing to trust. Read the SKILL.md and any hook definitions first, the same as you would a dependency.

Adding one to Claude Code

A marketplace is added once, then plugins are installed from it:

/plugin marketplace add obra/superpowers-marketplace
/plugin install superpowers

A loose skill is a folder you drop into .claude/skills/ in a project, or into~/.claude/skills/ to have it everywhere. There is nothing to install and nothing to build — the folder is the skill.